You are in the intensive care unit caring for a patient who is in multiple organ dysfunction syndrome.The patient requires mechanical ventilation, has an arterial line in the right radial artery, and has a Swan-Ganz catheter inserted in the right internal jugular.
You notice the central venous pressure is 12 mm Hg. Which of the following reasons may cause the central venous pressure reading of 12 mm Hg? Select all that apply.

Choice A rationale

Tracheal deviation is a classic and late sign of a tension pneumothorax, which is a life-threatening emergency. In a mediastinal context, shift of the trachea indicates significant pressure buildup in the thoracic cavity that can compress the heart and great vessels, leading to obstructive shock. This requires immediate needle decompression or chest tube adjustment. Normal tracheal position is midline, and any shift suggests a rapid compromise of respiratory and circulatory function necessitating urgent medical intervention.

Choice B rationale

Production of pink, frothy sputum often suggests pulmonary edema or minor airway irritation, but it is not the most acute finding specifically related to a mediastinal chest tube. While it requires assessment of oxygenation and heart failure markers, it does not represent the same immediate mechanical failure as a tension pneumothorax or massive hemorrhage. The nurse should monitor the patient's lung sounds and oxygen saturation, but other choices represent more direct and catastrophic complications.

Choice C rationale

Pain at the insertion site is an expected finding following the placement of a chest tube due to the stimulation of intercostal nerves and parietal pleura. While the nurse should provide adequate analgesia to facilitate deep breathing and prevent atelectasis, it is not an emergency requiring immediate intervention. Assessing the nature of the pain is important to rule out new complications, but it does not take priority over signs of hemodynamic or respiratory collapse in this scenario.

Choice D rationale

Sudden onset of shortness of breath is a hallmark sign of a recurring pneumothorax, tube occlusion, or pulmonary embolism. Rapid respiratory distress indicates that gas exchange is severely compromised, and the nurse must immediately assess breath sounds and the integrity of the chest drainage system. Rapid intervention is required to ensure the lung remains expanded and the patient is ventilated. This symptom reflects an acute change in clinical status that can lead to respiratory failure if ignored.

Choice E rationale

Drainage greater than 100 ml/hr from a mediastinal chest tube is a significant finding that may indicate active postoperative bleeding. While some drainage is expected, a rate exceeding this threshold requires immediate notification of the surgeon as the patient may require a return to the operating room for hemostasis. Excessive blood loss can lead to hypovolemic shock. Monitoring the trend of drainage is a standard nursing responsibility, and this specific volume is a widely recognized trigger for intervention.

Choice A rationale

Forcing a terminally ill patient to eat is medically and ethically inappropriate. As the body nears death, the metabolic rate slows down, and the digestive system begins to shut down. Forcing intake can lead to complications such as aspiration, nausea, vomiting, and increased physical distress. The goal of care at this stage shifts from nutrition and life extension to comfort and symptom management, respecting the patient's natural physiological decline and their personal autonomy.

Choice B rationale

This response addresses the wife's concern while prioritizing the patient's comfort and autonomy. In terminal illness, anorexia is a natural part of the dying process as the body no longer requires or can process significant caloric intake. Providing food only when requested prevents the discomfort associated with forced feeding. This approach supports the family emotionally by providing a clear strategy that honors the patient's wishes while ensuring that the opportunity for nourishment remains available.

Choice C rationale

Stating that a patient is getting all needed nutrients from an IV is often scientifically inaccurate in terminal care. IV fluids provided for hydration do not typically contain sufficient calories or proteins to maintain nutritional status. Furthermore, over-hydration in a dying patient can lead to pulmonary edema, increased secretions, and discomfort. This response dismisses the wife's concern with potentially false information and fails to address the underlying physiological reality of the patient's condition and nutritional needs.

Choice D rationale

Placing a feeding tube in a terminally ill patient is generally discouraged unless it aligns with specific goals of care or temporary recovery. In the end-of-life phase, enteral nutrition does not improve survival or quality of life and can cause significant complications like infection, agitation, and the need for restraints. Suggesting a feeding tube focuses on a technical intervention that may increase suffering rather than addressing the natural transition toward death and the need for comfort.